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mailbox database.edb and a sum of totalitemsize output difference
Posted on 2011-09-06
My Exchange 2007 server has mailbox database.edb file, that is 137 GB in size
If I pull the report by running a command " Get-MailboxStatistics -Database “Mailbox Database” | Select DisplayName, TotalItemSize | Export-CSV.." , then summarize TotalItemSize for all mailboxes, I am getting 160 GB number. Several days ago it was 172 GB, but after the users ran some cleanup the size reduced to 160 GB. The size ofa mailbox database.edb file still is growing though.
Could anybody help me to figure out why there is a difference between the size of mailbox database.edb file and a sum of all TotalItemSize items.
Thank you
If I pull the report by running a command " Get-MailboxStatistics -Database “Mailbox Database” | Select DisplayName, TotalItemSize | Export-CSV.." , then summarize TotalItemSize for all mailboxes, I am getting 160 GB number. Several days ago it was 172 GB, but after the users ran some cleanup the size reduced to 160 GB. The size ofa mailbox database.edb file still is growing though.
Could anybody help me to figure out why there is a difference between the size of mailbox database.edb file and a sum of all TotalItemSize items.
Thank you
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7 Comments
I would understand if I have .edb file larger then total up all the mailboxes plus white space, but the situation is opposite, .edb file is 137 GB, total up all the mailbox is 160 GB plus white space is about 1 GB.
we have just one database, but we have a standby server on the recovery site, with information store distmounted , replicated by a software called ca xosoft, and I just wonder, if that might be something to do with this strange issue
You can never compare edb size to toal size of mailboxes there is a lot of factors
Whitespace is one, the other is sis (single instance storage) where one attachement sent to multiple users will show in the size of each mbx but only one in tne db
Whitespace is one, the other is sis (single instance storage) where one attachement sent to multiple users will show in the size of each mbx but only one in tne db
is it possible to confirm that is the case, I thought about it, as our users are sending multiple attachments to a number of people, but not sure how can I get the numbers
What do you mean confirm? Again there is no direct relation between the edb and the mailbox sizes.
Typically the edb will be bigger because of retention items, white space, table structures etc...
However in a case where same mail is sent to multiple users then sis will result in an edb smaller than the total of the mailboxes
Typically the edb will be bigger because of retention items, white space, table structures etc...
However in a case where same mail is sent to multiple users then sis will result in an edb smaller than the total of the mailboxes
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